Internals: Favor {} constructor syntax. No functional change intended.

src/V3LinkJump.cpp

@@ -192,7 +192,7 @@ private:
         //    REPEAT(count,body) -> loop=count,WHILE(loop>0) { body, loop-- }
         // Note var can be signed or unsigned based on original number.
         AstNodeExpr* const countp = nodep->countp()->unlinkFrBackWithNext();
-        const string name = string("__Vrepeat") + cvtToStr(m_modRepeatNum++);
+        const string name = string{"__Vrepeat"} + cvtToStr(m_modRepeatNum++);
         // Spec says value is integral, if negative is ignored
         AstVar* const varp
             = new AstVar{nodep->fileline(), VVarType::BLOCKTEMP, name, nodep->findSigned32DType()};